MCQ
Which oxide of manganese is amphoteric
- ✓$Mn{O_2}$
- B$M{n_2}{O_3}$
- C$M{n_2}{O_7}$
- D$MnO$
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In the light of the above statements, choose the correct answer from the options given below :
(image) $\xrightarrow{{SOC{l_2}}}\,B\,\xrightarrow{{N{H_3}}}\,C$$\,\xrightarrow[{B{r_2}}]{{NaOH}}\,D$
The molar mass of the biopolymer is $.....\,\times 10^{4} \,\mathrm{~g}\,\mathrm{~mol}^{-1}$. (Round off to the Nearest Integer)
[Use : $\mathrm{R}=0.083\, \mathrm{~L}\, bar \,\mathrm{mol}^{-1} \,\mathrm{~K}^{-1}$ ]
